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Douglas' Nightshade Back to Plant Page
Solanum douglasii

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About Douglas' Nightshade (Solanum douglasii) Solanum douglasii is a species of nightshade known by the common name greenspot nightshade. It is native to the northern half of Mexico and the southwestern south-central United States. Its habitat includes scrub and woodland. Solanum douglasii is a perennial herb or subshrub approaching two meters in maximum height. The stem is coated in short, white hairs. The leaves may be up to 9 centimeters long and have smooth or toothed edges. The inflorescence is an umbel-shaped array of flowers with star-shaped white corollas up to a centimeter wide. There are generally green spots at the bases of the corolla lobes. The yellow anthers are a few millimeters in length. Flowers may be seen blooming throughout much of the year. The fruit is a spherical berry up to a centimeter wide. Native Americans used the juice of the berries medicinally, and as dye for tattooing.
Plant Description
Plant Type
Perennial herb

Max. Height
3.5 - 7 ft (1.1 - 2.1 m)

Flower Color
White, Lavender

Flowering Season
Spring, Summer, Fall, Winter

Native Status

Natural Setting
Site Type
Dry places

Sun, Part Shade

Elevation ?
-53' - 6869'

Annual Precip. ?
3.8" - 59.0"

Summer Precip. ?
0.14" - 2.12"

Coldest Month ?
32.4° F - 58.3° F

Hottest Month ?
58.4° F - 87.8° F

Humidity ?
0.01 vpd - 38.88 vpd

Landscaping Information
Ease of Care
Moderately Easy

Water Requirement ?
Extremely Low, Very Low
Extremely Low
Very Low
Moderate - High

Propagation ?
For propagating by seed: No treatment; sow outdoors in late summer. Spring sowing gives fair

Common uses
Bird Gardens

Nursery Availability
Rarely Available

Other Names
Common Names
Greenspot Nightshade

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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